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    <script>
        let arr = [1, 2, 3, 4, 5, 6]
        
        function fn(a) {
            let sum = 0
            for (let i = 0; i < a.length; i++) {
              
                if (a[i] % 2 === 0) {
                    sum += a[i]
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            return sum
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        let res = fn(arr)
        console.log(res)



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